Eelgrass

Definitions

1. Any of several species of aquatic plant, with very long and narrow leaves
   countable, uncountable
2. Zostera spp. in marine environments
   countable, uncountable
3. especially Zostera marina, growing abundantly in shallow bays along the coasts of the Northern Hemisphere.
   countable, uncountable
4. Vallisneria spp. in freshwater environments.
   countable, uncountable

Equivalents

CEFR level